Skip navigation

JSI Tip 3497. When you Telnet to a SMTP or POP server, your input has no effect?

When you Telnet to ports 25 or 110 to perform manual SMTP / POP input, you see the prompt, but your input has no effect?

Some POP and SMTP servers require a CR and LF. When you press ENTER, only a CR is being sent.

To resolve the problem, in Telnet, before you connect, type:

set crlf

Hide comments


  • Allowed HTML tags: <em> <strong> <blockquote> <br> <p>

Plain text

  • No HTML tags allowed.
  • Web page addresses and e-mail addresses turn into links automatically.
  • Lines and paragraphs break automatically.